On the formation of the gradient temperature fields in the spark plasma sintering process
Annotation
The computer simulation of the spark plasma sintering process (SPS process) has been carried out. The simultaneous impact of thermal and electrical fields was considered. The capability of creating of the gradient temperature field during the SPS process has been studied. Factors having impact on temperature field distribution have been analyzed. Contact between die and lower graphite insert leads to gradient temperature field formation. The reason is inhomogeneous thermal field distribution, a large part of which goes in the direction of the contact. The change of die configuration, namely, the increasing of foundation size, leads to changes in thermal fields distribution and temperature difference as a result. Greater values of the distribution between lower (cool) and upper (hot) interfaces of the sample can be obtained when using rectangular shape of die foundation. The height dependence of temperature difference has been showed.
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